diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/gen6_hiz.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/src/mesa/drivers/dri/i965/gen6_hiz.c b/src/mesa/drivers/dri/i965/gen6_hiz.c index 92b1d61ef44..4d36729e7c5 100644 --- a/src/mesa/drivers/dri/i965/gen6_hiz.c +++ b/src/mesa/drivers/dri/i965/gen6_hiz.c @@ -114,14 +114,16 @@ gen6_hiz_get_framebuffer_enum(struct gl_context *ctx, GLenum *bind_enum, GLenum *get_enum) { - /* If the blit framebuffer extension isn't supported then Mesa will - report an error if we try to bind GL_DRAW_FRAMEBUFFER. However in - that case it should be safe to just save and restore - GL_FRAMEBUFFER instead. */ if (ctx->Extensions.EXT_framebuffer_blit && ctx->API == API_OPENGL) { + /* Different buffers may be bound to GL_DRAW_FRAMEBUFFER and + * GL_READ_FRAMEBUFFER. Take care to not disrupt the read buffer. + */ *bind_enum = GL_DRAW_FRAMEBUFFER; *get_enum = GL_DRAW_FRAMEBUFFER_BINDING; } else { + /* The enums GL_DRAW_FRAMEBUFFER and GL_READ_FRAMEBUFFER do not exist. + * The bound framebuffer is both the read and draw buffer. + */ *bind_enum = GL_FRAMEBUFFER; *get_enum = GL_FRAMEBUFFER_BINDING; } |